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Unformatted text preview: Chapter 4 Worksheet 1. A _just noticeable difference__ is a difference threshold that indicates the amount of change in stimulus needed to detect a difference. 2. Sensation _is using senses to pick up feedback about the environment_ while perception is _interpreting senses to "make sense" of stimuli_______. 3. "The smallest detectable increase in the intensity of a stimulus is a constant proportion of the intensity of the original stimulus" is known as __Weber's Law__. 4. Fechner's law states that _constant increments in the intensity of a physical stimulus creates a progressively smaller perceived increase in intensity. 5. The __retina__ is a part of the eye that takes in light and an upside-down image, which is then transmitted to the brain. 6. Why is there a blind spot in our vision? _area where the optic nerve leaves the eye; no rods or cones are present___ 7. Rods in the retina are responsible for detecting _light/dark, color vision_ and cones in the retina are responsible for detecting __color___. 8. Name the theory of color vision that explains that there are 3 receptors in the retina that respond to different regions of the color spectrum: _trichromatic theory_ and who developed this theory ___von Helmholtz, Young_____. 9. How is opponent-process theory different? _3 pairs of cones (R/G, B/Y, B/W) wherein only 1 of 2 can transmit information at one time__ 10. What is the name of the theory created to unite these two color vision theories, and what does the theory state? _dual process theory; combination of two theories__ 11. What part of the ear contains receptors that fire and transmit information to the auditory nerve (which then transmits info to the brain)? __cochlea____ 12. Similar to the theories of color vision, there are two main theories of audition, which were then combined to form a compromise. They are: Chapter 4 Worksheet a. ___Place Theory__________ b. __Frequency Theory_______ c. __Place-Plus theory (combination of the two)_ ...
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- Spring '08